Ubuntu 20.04

Common Problems 117417

Ubuntu 20.04 APT Lock File Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 24 October 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Common Problems 117542

Ubuntu 20.04 LTS rsyslog Queue Backlog Delays Alerts

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Common Problems 117393

Ubuntu 20.04 LTS – apt update fails with NO_PUBKEY for third-party repository – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2020 Affected versions: Ubuntu 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Common Problems 117440

Ubuntu 20.04 LTS Filesystem Mount Fails at Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Common Problems 117572

Ubuntu 20.04 LTS Cron Jobs Not Running Under systemd Timers

🟡 Medium   ⏱ 5–30 min  Last verified: 20 October 2020 Affected versions: 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Ubuntu 20.04 — wavpack — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — wavpack — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 October 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4682-1 Related CVEs: CVE-2020-35738 Upstream summary: It was discovered that WavPack incorrectly handled certain WAV files. An attacker could possibly use this issue to execute arbitrary code or cause a […]

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Ubuntu 20.04 — nfs-utils — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nfs-utils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 October 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4400-1 Related CVEs: CVE-2019-3689 Upstream summary: It was discovered that the nfs-utils package set incorrect permissions on the /var/lib/nfs directory. An attacker could possibly use this issue to escalate privileges. […]

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Como instalar o MongoDB a partir dos repositórios APT padrão no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como instalar o MongoDB a partir dos repositórios APT padrão no Ubuntu 20.04

O MongoDB é um banco de dados de documento NoSQL de código aberto e gratuito usado habitualmente em aplicativos Web modernos. Ao seguir este tutorial, você instalará o MongoDB em um servidor Ubuntu 20.04 usando os repositórios APT padrão. Você também aprenderá como gerenciar seus serviço e habilitar, de maneira opcional, o acesso remoto.

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